HEATKEYS

Freebyte, Your guide to the Web. Free software, clipart, images, music, games, jokes, anti-virus, dictionaries, pims, operating systems, programming tools, news, weather, screensavers, ebooks, etc.

Scientific physics forums for professionals and students to discuss serious issues and topics regarding physics in theory, practice, study and reality. Students can also find help for homework and career perspectives

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Serving the Technologist for more than a decade. IT news, reviews, and analysis.

A help and support forum for Ubuntu Linux.

LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more.

Open CASCADE Technology, an environment for 3D modeling and development of numerical simulation software including CAD/CAM/CAE, AEC and GIS, as well as PDM applications.

Amber is a package of programs for molecular dynamics simulations of proteins and nucleic acids

The U.S. DOE Energy Efficiency and Renewable Energy Web site provides information on energy efficiency and renewable energy technologies.

AlternativeTo let you find new PC (Windows, Linux), Mac, iPhone, Android, Web/Online software based on applications you already know instead of useless categories. We make each application into a category. (AlternativeTo is sometimes called alternati...

osalt.com helps recommend a open source software alternative or replacement for commercial products and even shareware. Remember that open source software is also a freeware alternative.